Last update : 12/1/2004

cmoment - central moments of all orders

### Calling Sequence

  `mom=cmoment(x,ord)`
  `mom=cmoment(x,ord,'r') or mom=cmoment(x,ord,1)`
  `mom=cmoment(x,ord,'c') or mom=cmoment(x,ord,2)`

### Parameters

- `x`: real or complex vector or matrix
- `ord`: positive integer

### Description

cmoment`(x,ord)` is the central moment or order ord of the elements of `x`. If a third argument of type string `'r'` (or `1` ) or `'c'` (or `2`) is used, we get in the first case, a row vector `mom` such that `mom(j)` contains the central moment of order `ord` of the `j` column of `x`. `cmoment(x,ord,'c')` is used in the same way for the central moments in the rows.

### References

Wonacott, T.H. & Wonacott, R.J.; Introductory Statistics, J.Wiley & Sons, 1990.

### Examples

    x=[0.2113249 0.0002211 0.6653811;
       0.7560439 0.3303271 0.6283918]
    mom=cmoment(x,3)
    mom=cmoment(x,2,'r')
    mom=cmoment(x,3,'c')

### See Also

`sum`, `median`, `st_deviation`, `mean`, `meanf`, `moment`, `nanmean`, `nanmeanf`, `stdev`, `stdevf`, `variance`, `variancef`, `nanstdev`,

### Author

Carlos Klimann